Piratas da Anselmo (11B)

23 January 2023

Tejo

Praia do Porto Brandão

Location coordinates: 38.677023 -9.207332

Group A

Average waste per m² in all riverside zones

31

Foreshore (Average waste per m²)

8.5

Backshore (Average waste per m²)

10.6

Riverbank crown (Average waste per m²)

10.5

Group B

Total number of waste items found (including single-use plastic)

2477

Weight of all waste including plastic in kg

47

Group C

Flow velocity of the river (meters per second)

0.19

River width in m

1500

Total number of floating waste

46

Larger Microplastics per 1,000 liters of river water

-

Larger Microplastics per m² of the riverbank

-